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The IoT-context management platforms (CMPs) have evolved from IoT silos to advanced systems that seamlessly access context providers (third-party IoT-data providers). Such evolution enabled them to respond adequately to dynamically varying needs of context consumers (context-aware IoT appli-cations). Nevertheless, the densely deployed context providers lead to multiple options that potentially complete context re-quests, resulting in the problem of 'which context provider to select ?‘. Moreover, these providers often vary in their service characteristics-Cost of Context (CoC) and Quality of Context (QoC). Therefore, the CMPs should be enabled with QoC and CoC-aware selection mechanisms to select effective context providers. Unfortunately, the Service Level Agreements (SLAs) between the context providers and CMPs that helps design these mechanisms have substantial shortcomings. This paper …